RBS Stumbles on Road Back

Sudden Resignation of Bank's Chief Financial Officer Adds to Jitters

Royal Bank of Scotland is bringing new meaning to the word beleaguered.

The resignation of its chief financial officer, Nathan Bostock, after just 10 weeks in the job, is the latest in a chapter of accidents at the 81% state-owned U.K. bank. In recent weeks RBS has suffered a systems breakdown in its cash machines, and a row over its lending...